package com.captcha.demo.controller;

import cn.hutool.captcha.CaptchaUtil;
import cn.hutool.captcha.ShearCaptcha;
import com.captcha.demo.model.CaptchaProperties;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.io.IOException;
import java.util.Date;

@RestController
@RequestMapping("/captcha")
public class CaptchaController {

    @Autowired
    private CaptchaProperties captchaProperties;
    private final static Long VALID_TIME = 60 * 1000L;

    @RequestMapping("/getCaptcha")
    public void getCaptcha(HttpSession session, HttpServletResponse response) {
        response.setContentType("image/jpeg");
        response.setHeader("Progma","N0-cahce");
        try {
            ShearCaptcha captcha = CaptchaUtil.createShearCaptcha(captchaProperties.getWidth(), captchaProperties.getHeight());
            String code = captcha.getCode();
            session.setAttribute(captchaProperties.getSession().getKey(),code);
            session.setAttribute(captchaProperties.getSession().getDate(),new Date());
            captcha.write(response.getOutputStream());
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    @RequestMapping("/check")
    public boolean check(String captcha,HttpSession session) {
        if(!StringUtils.hasLength(captcha)) {
            return false;
        }
        String code = (String)session.getAttribute(captchaProperties.getSession().getKey());
        Date date = (Date)session.getAttribute(captchaProperties.getSession().getDate());
        if(captcha.equalsIgnoreCase(code) && date != null
        && System.currentTimeMillis() - date.getTime() < VALID_TIME) {
            return true;
        }
        return false;
    }
}
